Topic 2

2.1 Characteristics of Sound
Simulation on molecular motion in Sound Wave here

2.2 Intensity of Sound - Decibels

2.3 The Ear and Its Response- Loudness

2.4 Sources of Sound

Vibrating String

 

Vibrating Air Column (Open at both ends)

Simulation on displacement profile here  

Vibrating Air Column (Open at one end) 

Simulation on displacement profile here

2.5 Quality of Sound and Noise; Superposition

2.6 Interference of Sound Waves; Beats

Simulation on beat here

2.7 Doppler Effect

Simulation on Doppler effect here
Extra reading : Kosmo Online - Inmarsat Guna Kaedah Fizik Kesan MH370
Extra reading : The Aviationist -  Dopple Effect on Satellite Pings Disclosed MH370's Final Route

Introduction

Moving Source

Moving Observer

2.8 Applications: Sonar, Ultrasound and Medical Imaging